公开(公告)号：US20180295050A1

公开(公告)日：2018-10-11

申请号：US15644206

申请日：2017-07-07

Applicant: QUALCOMM Incorporated

Inventor： Tien-Hsin LEE ,  Mathew Zivney ,  Manjunatha Kantharaju ,  Shanka Ganesh Lakshmanaswamy ,  Kirankumar Bhoja Anchan ,  Vasudev Nayak

IPC: H04L12/727 ,  G06F3/16

CPC classification number: H04L45/121 ,  G06F3/165 ,  H04L43/04 ,  H04L43/0858 ,  H04L43/087 ,  H04L47/30

Abstract: An apparatus includes de-jitter buffer control circuitry configured to determine an arrival delay value based on previously received audio packets, to identify a receive time of a first audio packet of a talk spurt, to determine an offset value of the first audio packet based on the receive time and the arrival delay value, and to adjust a target delay value associated with a de-jitter buffer based on the offset value. The apparatus also includes a de-jitter buffer configured to buffer the first audio packet based on the adjusted target delay value.

公开(公告)号：US20180343098A1

公开(公告)日：2018-11-29

申请号：US15897036

申请日：2018-02-14

Applicant: QUALCOMM Incorporated

Inventor： Neha GOEL ,  Srinivasan BALASUBRAMANIAN ,  Tien-Hsin LEE ,  Sanjeev MITTAL ,  Rama Krishna NUNNA ,  Vikram SINGH

IPC: H04L5/00 ,  H04L1/18 ,  H04N21/61

Abstract: Certain aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless communication device may determine that a video frame was not properly received by the wireless communication device. The wireless communication device may determine whether a reference frame is stored in a buffer of the wireless communication device based at least in part on determining that the video frame was not properly received. The wireless communication device may selectively transmit a negative acknowledgement (NACK) indication based at least in part on determining whether the reference frame is stored in the buffer. Numerous other aspects are provided.

公开(公告)号：US20160087913A1

公开(公告)日：2016-03-24

申请号：US14860442

申请日：2015-09-21

Applicant: QUALCOMM Incorporated

Inventor： Min WANG ,  Arungundram Chandrasekaran MAHENDRAN ,  Tien-Hsin LEE ,  Vikram SINGH ,  Srinivasan BALASUBRAMANIAN

IPC: H04L12/927 ,  H04L12/801 ,  H04L29/08

CPC classification number: H04L47/805 ,  H04L47/14 ,  H04L65/1006 ,  H04L65/1069 ,  H04L65/1089 ,  H04L65/80 ,  H04L67/322

Abstract: Techniques for setting up a packet-switched video telephony (PSVT) call are described. A mobile originated (MO) device may transmit an invitation for the PSVT call to a mobile terminated (MT) device. The invitation may initiate a process to reserve and identify video and audio resources to establish the PSVT call. The MO device may determine whether the video resources are available. If the video resources are not available but audio resources are available, the MO device may instead establish the PSVT call with only an audio stream call between the MO device and the MT device. If audio resources become available ahead of video resources, the PSVT call may be established with an audio stream first and a video stream is automatically added to the call when video resources are reserved later, or the PSVT call is downgraded to a VoIP call if the video resources cannot be reserved.

Abstract translation: 描述了用于建立分组交换视频电话（PSVT）呼叫的技术。 移动发起（MO）设备可以向移动终端（MT）设备发送用于PSVT呼叫的邀请。 该邀请可以启动一个流程来预留和识别视频和音频资源来建立PSVT呼叫。 MO设备可以确定视频资源是否可用。 如果视频资源不可用，但是音频资源可用，则MO设备可以改为仅在MO设备和MT设备之间建立音频流呼叫来建立PSVT呼叫。 如果音频资源在视频资源之前可用，则可以首先用音频流建立PSVT呼叫，并且当稍后保留视频资源时视频流被自动添加到呼叫，或者如果PSVT呼叫被降级到VoIP呼叫 视频资源不能保留。